lumbric 
brico, < L. luinbiiciix. an intestinal worm, an 
earthworm.] A worm. Clarke. [Rare.] 
lumbrical (lum'bri-kal). n. and n. [= F. Pg. 
lumbricnl = Sp. lombrizul = It. lombricale, < 
NL. luinbrirnlit, < L. Ittmbriciix, an intestinal 
worm, an earthworm : see liimbric.] I. a. Per- 
taining to or resembling a worm ; lumbriciform; 
vermiform : specifically applied in anatomy to 
the lumbricales. 
II. n. A lumbrical muscle. See lumbricalis. 
lumbricalis (lum-bri-ka'lis), n.; pi. lumbricales 
(-lez). [NL.: see lumbrical.'] In (mat., a lum- 
brical muscle : so called from its resemblance 
in size and shape to a worm. There are four of these 
small muscles in the palm of the hand and four in the sole 
of the foot, sometimes distinguished us lumbricales mama 
and lumbricalex pedis; the former are also called fidici- 
nales, or fiddler's muscles, because they contribute to the 
quick movements of the musician's fingers. They are 
ancillary to the deep flexor muscles. Each lumbricalis 
arises from one of the teudons of a deep flexor muscle, 
whether of hand or foot, and is inserted into the side of 
the base of that finger or toe which such tendon supplies. 
Neither the thumb nor the great toe has a lumbricalis. 
Similar muscles occur in some mammals besides man. 
Lumbricidse (lum-bris'i-de), n. pi. [NL., < 
Lumbricus + -idee.'] A. family of terricolous 
annelids of the order Oligochceta, typified by the 
genus Lumbricus; earthworms. The body is long, 
cylindric, or nearly so, with numerous rings or segments, 
bearing bristly parapodia which assist in progression, some 
of the segments being modified into a cingulum or clitel- 
lus. There are no eyes, ears, or oral armature. See earth- 
worm'. 
lumbricide (lura'bri-sld), n. [Contr. of *lumbri- 
cicide, < L. lumbricus, an intestinal worm, + 
-cida, a killer, < ctedere, kill.] A vermifuge or 
anthelmintic which destroys the roundworm, 
Ascaris lumbricoides. 
lumbriciform (lum-bris'i-form), a. [< L. lum- 
bricus, an intestinal worm, an earthworm (see 
lumbric), + forma, form.] Like an earthworm 
in form; lumbricine ; luinbricoid; vermiform. 
Lumbricina (lum-bri-si'na), n. pi. [NL.,< Lum- 
bricus + -Mi<z2.] A tribe of annelids, the terrico- 
lous oligochtetous worms, such as earthworms. 
lumbricine (lum'bri-sin), a. [< NL. Ivmbriei- 
mts, < L. lumbricns, an intestinal worm: see 
lumbric.'] Lumbriciform; specifically, of or 
pertaining to the Lumbricina. 
luinbricoid (lum'bri-koid), o. and n. [< L. lum- 
bricus, an intestinal worm, an earthworm (see 
lumbric), + Gr. Mac, form.] I. a. Resembling 
an earthworm : specifically applied to the inter- 
nal parasite Ascaris lumbricoides, a nematoid, 
one of the commonest of the worms which in- 
fest man. See Ascaris. 
II. . The worm Ascaris lumbricoides. 
Lumbricomorpha (Ium-bri-ko-m6r'fa), n. pi. 
[NL., < L. lumbricus, an intestinal worm, an 
earthworm (see lumbric), + Gr. uopfytj, form.] 
The earthworms and their allies, regarded as 
one of four orders of oligoehsetous annelids 
Lumbriculidae (lum-bri-ku'li-de), n. pi. [NL., 
< Lumbricidus + -idee.'] A family of oligochse- 
tous annelids, taking name from the genus Lum- 
briculus. 
Lumbriculus (lum-brik'u-lus), n. [NL., dim. 
of L. lumbricus, an intestinal worm, an earth- 
worm: see lumbric.'] A genus of aquatic or 
limicoline oligocbsetous annelids, the type of 
the family Lumbriculidic. It is remarkable for the 
3540 
The . . . blue reek that came out of the lum-head. 
Scott, Heart of Mid-Lothian, xxvii. 
lumiere (F. pron. lit-miar'), n. [F., < LL. IH- 
utiiHirc, < L. lumen, light : see lumen.'] In armor. 
the opening in the vizor, whether of the large 
helm of the thirteenth century, of the bassinet, 
or of the armet of the fifteenth century. 
lumina, . Plural of lumen. 
luminant (lu'mi-uant), a. and n. [< LL. lumi- 
nan(t-)s. ppr. of luminare, brighten: see lumi- 
nate.] I. a. Emitting light; shining; luminous. 
II. n. An illuminating agent. [Rare.] 
Public institutions and factories are very much in favour 
of the new luminant. Elect. Ken. (Eng.), XXIV. 334. 
luminarist (lu'mi-na-rist), )/. [< luiinai-(y) + 
-ist.] In painting, a master of light and shade ; 
one skilful in rendering gradations and effects 
of light or of shadow. 
The finest works of that great and subtle luminarist 
Adrian van Ostade. The Academy, Jan. 21, 1880, p. 48. 
luminary (lu'mi-na-ri), .; pi. luminaries (-riz). 
[< OF. lumiiiarie, p\ litminaire, a light, = Pg. Sp. 
luminar, luminaria = It. luminare, luminara, lu- 
minaria, < LL. luminare, a lamp, a light, L. lumi- 
nare, a window, < lumen (lumin-), light : see lumi- 
nous.'] 1. Alight-giver; a body that illuminates 
or gives out light: applied especially to the sun 
and moon. 
Where the great luminary . . . 
Dispenses light from far. Mtttm, P. L., iii. 576. 
Hence 2. One who is a source of intellectual 
light; a person who illustrates any subject, or 
enlightens mankind: as, the great luminaries of 
an age ; a luminary of literature or science. 
It will not be necessary to bring under review the minor 
luminaries of this period. Prescott, Ferd. and Isa., i. 1. 
3f. An illumination. 
There were Luminaries of Joy lately here for the Victory 
that Don Gonxalez de Cordova got over Count Mansfelt in 
the Netherlands. Unwell, Letters, I. iii. 14. 
lump 
The luminoitily of ordinary flames depends on the pres- 
sure of the supporting medium. 
E. Franlcland, Exper. in Chem., p. 904. 
2. Specifically, the intensity of light in a color, 
measured photometrically. That is to say, a stan- 
dard light has its intensity, or vis viva, altered until it pro- 
duces the impression of being equally bright with the color 
whose luminosity is to be determined ; and the measure 
of the vis viva of the altered light relatively to its stan- 
dard intensity is then taken as the luminosity of the color 
in question. 
It is evident, then, that brightness or luminosity is one 
of the properties by which we can define colour ; it is our 
second colour constant. This word luminosity is also of- 
reflects much light to the eye. 
0. JV. Rood, Modem Chromatics. 
3. In bot., phosphorescence, 
luminous (lu'mi-nus), a. [< F. lumineux = Sp. 
reflecting light ; giving out light, whether as an 
original or as a secondary source ; illuminating ; 
shining; radiant; bright. 2. Producing or 
adapted to produce light; having the power of 
yielding light. 
The admission of luminous waves gives a perfectly sat- 
isfactory explanation ... of the great majority of the 
phenomena of light. Lommel, Light (trans.), p. 213. 
3. Lighted up; illuminated; bright; clear; 
resplendent; rendering an effect of lightness 
or brightness, as a work of art or a color. 
The church of St. Justina, designed by Palladio, is the 
most handsome, luminous, disencumbered building in the 
inside that I have ever seen. 
Addison, Remarks on Italy (ed. Bohn), I. 384. 
Making the dusk and silence of the woods 
Glad with the laughter of the chasing floods, 
And luminous with blown spray and silver gleams. 
Wkittier, Franconia from the Pemigewasset. 
luminatet (lu'mi-nat), v. t. [< LL. luminatus, 
pp. of luminare, illumine, < L. lumen (lumin-), 
light: see luminous. Cf. illuminate, illumine, il- 
lume, limn, etc.] To illuminate. 
lumination (lu-mi-na'shon), n. [< LL. as if 
*luminatio(n-), < luminare',' shine: see luminate.~] 
If. Illumination. Johnson. 2. A lighting up; 
a flashing out, as of light or energy; an illumi- 
nating outburst. [Rare.] 
The liberty of the Netherlands, notwithstanding several 
brilliant but brief luminations, occurring at irregular in- 
tervals, seemed to remain in almost perpetual eclipse. 
Motley, Dutch Republic, I. 43. 
lumlnet (lu'min), v. *. [< ME. luminen, < LL. 
luminare, shine: see luminate and loom 2 . Cf. il- 
lumine.'] To illumine; enlighten. See illumine. 
Thus the outwarde parte of the place lumt/ned the eyes 
of the beholders, by reason of y sumptuous worke 
Hall, Hist. Hen. VIII., an. 12. 
lumine (lu'min), n. [< L. lumen (lumin-), light : 
see lumen, luminous.'] The principle or the 
medium of light ; the luminiferous ether. Lon- 
don Jour. Arts, Sci., and Manuf., 1848. 
luminert, . An obsolete form of limner. 
lumineret, n. A Middle English form of limner. 
luminescence (lu-mi-nes'ens), n. [< lumines- 
cen(t) + -cc.~\ See the quotation. [Rare.] 
------- 1/ ----- j.- 13 iTOmnuMJM iur me 
power of reproduction by transverse fission which its mem- 
bers possess. The worm breaks in two, and proceeds to 
develop a new head for one of its pieces and a new tail for 
the other. 
Lumbricus (lum-bri'kus), n. [NL., < L. lum- 
bricus, an intestinal worm, an earthworm : see 
lumbric.] The typical genus of Lumbricidw. and 
together with Perichaita composing that family ; 
the earthworms proper, as L. terrestris. 
lumbus (lum'bus), n. ; pi. lumbi (lum'bi). [L. 
loin : see loin.'] In anat., the loin; the lumbar 
region of the body Q Uadra tus lumborum, the 
square muscle of the loins, a stout thick muscle of quadri- 
lateral shape extending from the twelfth rib to the crest of 
the ilium on each side of the spinal column. 
lumet, t>. i. An obsolete form of loom?. 
lumen (lu'men), n.; pi. lumina (-mi-na). [NL 
. L. lumen, light, a light, a window:' see lumi- 
nous.] 1. An opening or passageway, as, in 
anat of a hollow tubular organ: as, the lumen 
of the intestine or of a blood-vessel 
SSS&KSES? 
the 
lum-head (lum'hed), n. A chimney-top. 
[Scotch.] 
In a former paper I have ventured to employ the term 
luminescence for all those phenomena of light which are 
more intense than corresponds to the actual tempera- 
E. Weidemann, Philosophical Mag., 6th ser., XXVIII. 151. 
luminescent (lu-mi-nes'ent), a. [< L. luminare, 
shine, + -escent.~] Characterized by lumines- 
cence. [Rare.] 
Luminescent light is in a high degree dependent in colour 
ancl intensity upon the mode of production 
E. Weidemann, Philosophical Mag., 5th ser., XXVIII. 155. 
luminiferous (lu-mi-nif'e-rus), a. [< L. lumen 
(lumin-), light, + ferre"= E. 6e-l.] 1. In 
physics, producing or bearing light; yielding 
light: as, the luminiferous ether. See efher\ 2. 
The luminiferous motions are only components of the 
whole motion. Sir W. Thomson, Reprint of Papers, p. 419. 
2. Serving as a medium for conveying light. 
luminologist (lu-mi-nol'o-jist), n. One who is 
versed in the study of illuminations (of manu- 
scripts). 
He incorporates manuscript notes placed at his disposal 
by our veteran Gosse, and by tumhuHagUtt such as Giglioli 
Dubois, and others. Nature, XXXVII 411! 
luminosity (lu-mi-nos'i-ti), n. [= F. luminosite 
-. It. luminosita, < ML. luminosita(t-)x, splen- 
dor, < L. luminosus, luminous: see luminous.] 
1. The quality of being luminous or bright; 
lummousness; the radiation or reflection of 
light. 
4. Figuratively, brilliant; bright or resplen- 
dent to the mind. [Rare.] 
He fBunsen] is really luminous, and his conversation 
equally amusing and instructive. 
Oretille, Memoirs, April 9, 1830. 
5. Clear or evident to the mind, as if emitting 
light or as if illuminated ; of such a nature as 
to be readily apprehended by the understand- 
ing. 
None of his critics has refused him [Boscovich] the praise 
of the most luminous perspicuity. 
D. Stewart, Philos. Essays, i. 2. 
6. Characterized by perspicuity of thought: 
as, a luminous intellect Luminous anim^ia O r 
plants, those animals or plants which emit light from 
the whole or some part of the body. Luminous cur- 
rents, a term sometimes applied to electric currents 
through rarefied gases (see Geissler's tubes, under tube). 
Luminous paint. See paint, 
luminously (lu'mi-nus-li), adv. In a luminous 
manner; with brightness or clearness. Smart. 
luminpusness (lu'mi-nus-nes), n. The quality 
of being luminous, in any sense ; brightness ; 
clearness. 
lummakin(lum'a-kin),o. [Ct.lummox.'] Heavy; 
awkward. [Prov. Eng.] 
lunime (lum), . A variant of looms. 
lummox (lum'oks), n. [Cf. lummakin ; prob. ult. 
connected with ZttDtpl.J An unwieldy, clumsy, 
stupid fellow. [Prov. Eng. and U. S.] 
lummy (lum'i), . [Origin obscure.] Know- 
ing; cute. [Thieves' slang.] 
To think of Jack Dawkins Jummy Jack the Dodger 
the Artful Dodger, going abroad for a common twopenny- 
half -penny sneeze-box ! Dictcens, Oliver Twist, xlii. 
lump 1 (lump), n. [< ME. lompe, lumps, < Sw. 
dial, and Norw. lump, a stump, a piece cut off 
from a log; cf. OD. lompe, D. lomp, a rag, tat- 
ter, = late MHGr. lumpe, G. lumpen, a rag, tat- 
ter, lump, a ragamuffin, curmudgeon; prob. 
ult. akin (as a nasalized form) to lapv. Cf. 
lunch, flumpl."] 1. A small mass; a relatively 
small aggregation or conglomeration of solid 
matter without regular form: as, a lump of ore, 
clay, or dough ; to melt a number of coins into 
one lump. 
A loof other half a loof, other a lompe of cheese. 
Piers Plan-man (C), x. 150. 
A little leaven leaveneth the whole lump. Gal. v. 9. 
"Deborah, my dear," cried I to my wife, "give those 
boys a lump of sugar each." Goldsmith, Vicar, vi. 
2. A protuberant part; a knob, bunch, or swell- 
ing : as, a lump raised on the head by a blow. 
3f. A blow. 
Hittes hym on the hede, that the helme bristis ; 
Hurtles his hene-pane an haunde-hrede large ! 
Thus he layes one the himppr. and lordlye theme served 
\\ ondide worthily wirchipfulle knyghttez ! 
Morte Arlhure (E. E. T. S.) , 1. 2230. 
